Porous carbon material as well as preparation method and application thereof

The invention relates to a porous carbon material as well as a preparation method and application thereof, and belongs to the technical field of porous carbon materials. The preparation method comprises the following steps: firstly, uniformly mixing mesocarbon microbeads and a stripping agent, removing small molecular branched chains and straight chains in the mesocarbon microbeads, and only retaining aromatic ring structures in the mesocarbon microbeads to obtain a carbon skeleton; then, the carbon skeleton is subjected to thermal oxidation crosslinking under the condition of 350-550 DEG C, some oxygen-containing groups can be modified on an aromatic ring in the thermal crosslinking process, aromatic ring polycondensation is hindered under the thermal action, long-range ordered carbon sheet crystals cannot be formed, and the material can be disordered; and carbonizing the cross-linked carbon skeleton, and removing oxygen-containing groups at high temperature in the step to form pores, thereby obtaining the p